VP #4: Food webs and Energy Levels

What is the role of a producer in a food chain?

• To store energy from the sun

• To decompose dead matter

• To make its own food

• To eat other organisms

How much energy is typically transferred from one trophic level to the next?

• 100%

• 50%

• 10%

• 1%

What happens if a primary consumer is removed from a food chain?

• The tertiary consumers will become producers

• The producers will increase in number

• The secondary consumers may not have enough to eat

• The ecosystem remains unchanged

Why is a food web a better representation of an ecosystem than a food chain?

• It focuses on producers only

• It includes decomposers

• It shows only one path of energy flow

• It shows multiple interactions among organisms

What is the role of decomposers in an ecosystem?

• To eat living organisms

• To produce energy from sunlight

• To break down dead matter

• To compete with producers